How your tablet can save your life

摘要

Health trackers and "fitbands" have become big business over the last couple of years. But you don't necessarily need an overpriced elastic band round your wrist to keep yourself in good nick. There are dozens of brilliant apps that let you monitor, analyse and improve your health using your tablet or phone - and many of the best are completely free. Unfortunately, there are plenty of poor-quality, misleading health apps on the market, too. So here we'll direct you to the best ones, so you can be sure of good health advice and steer clear of the virtual quacks.